# Summer School in Mathematics 2022, Eötvös Loránd University, Budapest

## Róbert Freud (ELTE): A problem of Erdős and two proofs from "The Book"
(abstract) NEW LECTURE!

Let *A* be a finite set of positive integers so that adding up any
number of distinct elements of *A* we never get equal sums. How large can
be the sum of reciprocals of the elements of *A*?

Summer School 2022
Last modified: Sun Jun 26 15:56:41 CEST 2022